Getting the id for headings

[mriscoc]

function TLine.stripID(): String;
var
  p, start: integer;
  found: boolean;
  id: String;
begin
  if (isEmpty or (value[1 + Length(value) - trailing - 1] <> '}')) then
    exit('');

  p := leading;
  found := false;
  while (p < Length(value)) and (not found) do
  begin
    case value[1 + p] of
      '\':
        begin
          if (p + 1 < Length(value)) then
          begin
            if (value[1 + p + 1]) = '{' then
            begin
              inc(p);
              break;
            end;
          end;
          inc(p);
          break;
        end;
      '{':
        begin
          found := true;
          break;
        end
    else
      begin
        inc(p);
      end;
    end;
  end;

  if (found) then
  begin
    found := false;
    if (p + 1 < Length(value)) and (value[1 + p + 1] = '#') then
    begin
      start := p + 2;
      p := start;
      while (p < Length(value)) and (not found) do
      begin
        case (value[1 + p]) of
          '\':
            begin
              if (p + 1 < Length(value)) then
              begin
                if (value[1 + p + 1]) = '}' then
                begin
                  inc(p);
                  break;
                end;
              end;
              inc(p);
              break;
            end;
          '}':
            begin
              found := true;
              break;
            end;
        else
          begin
            inc(p);
          end;
        end;
      end;
    end;
   end;

  if (found) then
  begin
    id := Trim( Copy(value, start + 1, p-start));
    if (leading <> 0) then
    begin
      value := Copy(value, 1, leading) + Trim( Copy( value, leading + 1, start -2));
    end
    else
    begin
      value := Trim( Copy(value, leading +1, start -2));
    end;
    trailing := 0;
    if (Length(id) > 0) then
      exit(id)
    else
      exit('');
  end;
  exit('');
end;

[grahamegrieve]

so what's the actual issue? Do you have a test case?

[mriscoc]

Test Case for Txtmark extensions: Text anchors

## Headline with ID ##     {#headid}

Another headline with ID   {#headid2}
------------------------

* List with ID             {#listid}

Links: [Foo] (#headid)

This should produce:

<h2 id="headid">Headline with ID</h2>
<h2 id="headid2">Another headline with ID</h2>
<ul>
<li id="listid">List with ID</li>
</ul>
<p>Links: <a href="#headid">Foo</a></p>

The IDs are not inserted into the tags

[BsNoSi]

Wouldn't it be easier to do something like this:

## Headline with ID
→ becomes →
<h2 id="headline-with-id">Headline with ID</h2>

this is generic and quite easy to deal with because the headline itself is the ID.

[grahamegrieve]

well, maybe. What is common mark doing?

[grahamegrieve]

https://talk.commonmark.org/t/anchors-in-markdown/247. Per the first example. I'll implement it when I get a chance

[BsNoSi]

As far as I can see https://talk.commonmark.org/t/anchors-in-markdown/247 gives no final decision on that. Several compilers implicitly generate headline IDs by text (my example). But there is still an option vor anchors missing. I'd prefer something like :[jumpto] which would be close to footnote/image reference design.